19957815

素因数分解:

$3^2\times 5^1\times {\mathrm{659}}^1\times {\mathrm{673}}^1$

素因数の和:1343

約数の個数: 24

約数和(自身を含む): 34697520

約数和(自身を除く): 14739705

約数列:

[1, 3, 5, 9, 15, 45, 659, 673, 1977, 2019, 3295, 3365, 5931, 6057, 9885, 10095, 29655, 30285, 443507, 1330521, 2217535, 3991563, 6652605, 19957815]

約数ペア:

[(1, 19957815), (3, 6652605), (5, 3991563), (9, 2217535), (15, 1330521), (45, 443507), (659, 30285), (673, 29655), (1977, 10095), (2019, 9885), (3295, 6057), (3365, 5931)]